ETS Exhaust System without Mufflers for Focus RS Resonator Options::without Resonator The fittings threading into the

The fittings threading into the oil cooler are pipe thread

All testing was conducted fairly in Fahrenheit measurements on ONE day at a consistent outside temperature

(1) Black STM Rail

6 Micron Micro-Fiberglass Element:

ETS Exhaust System without Mufflers for Focus RS Resonator Options::without Resonator The fittings threading into theThis ETS Focus RS exhaust system is made without mufflers and features a 3" mid pipe that tucks up tightly against the underside of the vehicle giving you more ground clearance then any other exhaust on the market. The mid pipe connects to the muffler section using a 3" vband connection for a leak free seal and allows for a quick change race pipe for the drag strip! The muffler section consists of two straight through resonators that route into two,